Just a quick practice sketch, and also the beginning of the list of dragon types I have to draw.

The Earth Dragon is a primary dragon, meaning it's origin is unknown, and they've just kinda always been around.

The Earth Dragon has thick skin and a strong jaw, with small, weak wings. It lives in caves and in mountains and feasts on meat and, due to it's strong jaw, mineral rich rocks. They aren't known to interact with humans, usually remaining in their own habitats due to the abundant food. However, Earth Dragons tend to be territorial, while not actively seeking conflict.